import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '@/components/login.vue'
import Home from '@/components/home.vue'
import welcome from '@/components/welcome.vue'
import Users from '@/components/user/Users.vue'
import Rights from '@/components/power/Rights.vue'
import Roles from '@/components/power/Roles.vue'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    name: '/',
    redirect: '/login'
  },
  {
    path: '/login',
    name: 'Login',
    component: Login
  },
  {
    path: '/home',
    name: 'Home',
    component: Home,
    redirect: '/welcome',
    children: [
      { path: '/welcome', component: welcome },
      { path: '/users', component: Users },
      { path: '/rights', component: Rights },
      { path: '/roles', component: Roles }
    ]
  }
]

const router = new VueRouter({
  routes
})

//挂载路由导航守卫
router.beforeEach((to, from, next) => {
  //to 将要访问的路径
  //from 代表从哪个路径跳转而来
  //next 是一个函数， 表示放行
  // next()  放行  next('/login')  强制跳转
  if (to.path == '/login') return next()
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')

  //没有token, 直接跳转到登录页
  if (!tokenStr) return next('/login')
  else next()
})

export default router
